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31 条记录 (耗时 0.023 秒)

    Double superheterodyne tuner
    4.
    发明授权
    Double superheterodyne tuner 失效
    双超外差调谐器

    公开(公告)号：US4353132A

    公开(公告)日：1982-10-05

    申请号：US226826

    申请日：1981-01-21

    申请人： Takeshi Saitoh ,  Toshio Nagashima ,  Hiroshi Hatashita ,  Susumu Yamamoto

    发明人： Takeshi Saitoh ,  Toshio Nagashima ,  Hiroshi Hatashita ,  Susumu Yamamoto

    IPC分类号： H03J1/00 ,  H01P3/08 ,  H04B1/08 ,  H04B1/26

    CPC分类号： H01P3/081

    摘要： A double superheterodyne tuner including a first and a second frequency converter and a bandpass filter, constituted of microstrip lines, wherein the substrate in which the bandpass filter is built is disposed back to back with the substrates in which the first and second frequency converters are constructed, with the substrate for the bandpass filter extending over the first and second frequency converters, so that a sufficient high-frequency isolation of circuit elements can be effected by the use of smaller shielding plates, the overall size can be reduced and a uniform grounded condition can be obtained.

    摘要翻译： 包括由微带线构成的第一和第二频率转换器和带通滤波器的双重超外差调谐器，其中构成带通滤波器的基板与其中构成第一和第二变频器的基板背对背地背对着 用于带通滤波器的衬底在第一和第二变频器上延伸，使得可以通过使用较小的屏蔽板来实现对电路元件的充分的高频隔离，可以减小总体尺寸并且具有均匀的接地条件 可以获得。

    Device for controlling electric potential applied to developing electrode in an electrophotographic duplicator
    5.
    发明授权
    Device for controlling electric potential applied to developing electrode in an electrophotographic duplicator 失效
    用于控制施加到电子照相复印机中的显影电极的电位的装置

    公开(公告)号：US3981268A

    公开(公告)日：1976-09-21

    申请号：US585780

    申请日：1975-06-11

    申请人： Takuzo Tsukamoto ,  Mitsuharu Nakaguchi ,  Hidetoshi Kito ,  Toshio Nagashima ,  Akihiko Shirata ,  Shinichi Tsuda

    发明人： Takuzo Tsukamoto ,  Mitsuharu Nakaguchi ,  Hidetoshi Kito ,  Toshio Nagashima ,  Akihiko Shirata ,  Shinichi Tsuda

    IPC分类号： G03G15/06 ,  G03G15/08

    CPC分类号： G03G15/065

    摘要： A device for use in an electrophotographic duplicator employing a sensitive member comprising a temperature-dependent sensitive material whose static charge characteristic varies with the surface temperature thereof, the sensitive member bearing an electrostatic latent image having an image region and a background region, the device comprising a developing electrode disposed at the periphery of the sensitive member for effecting uniform development of the image region; temperature sensitive means disposed in the vicinity of the sensitive member responsive to the surface temperature of the sensitive member for generating a bias potential for the developing electrode, the developing electrode being so controlled by the bias potential that the bias potential is always maintained at a value greater than the value of the potential of the background region even when the temperature at the surface of the sensitive material decreases substantially thereby necessitating a substantial increase in the bias potential whereby little, or any, toner is deposited on the background region to thereby lessen fogging thereof.

    摘要翻译： 一种使用敏感元件的电子照相复印机的装置，其包括静电荷特性随其表面温度而变化的温度敏感材料，所述敏感部件承载具有图像区域和背景区域的静电潜像，所述装置包括 显影电极，设置在敏感部件的周围，用于均匀显影图像区域; 响应敏感部件的表面温度而产生用于显影电极的偏置电位的敏感元件附近的温度感应装置，显影电极被偏置电位控制，使得偏置电位始终保持在一个值 即使当敏感材料表面的温度大幅降低时，背景区域的电位值也大大降低，因此必须大幅增加偏置电位，从而在背景区域上沉积很少或任何调色剂，从而减少起雾 其中。

    Digital broadcast recorder
    6.
    发明授权
    Digital broadcast recorder 失效
    数字广播录像机

    公开(公告)号：US06909470B2

    公开(公告)日：2005-06-21

    申请号：US10338684

    申请日：2003-01-09

    申请人： Hiroyuki Mizukami ,  Yutaka Igarashi ,  Toshio Nagashima

    发明人： Hiroyuki Mizukami ,  Yutaka Igarashi ,  Toshio Nagashima

    IPC分类号： H04N5/44 ,  H04N5/52 ,  H04N5/922 ,  H04N11/00 ,  H04N5/46

    CPC分类号： H04N5/4446 ,  H04N5/4401 ,  H04N5/52 ,  H04N11/002

    摘要： A digital broadcast recorder capable of recording digital television (TV) signals includes a first frequency converter which converts a received digitally modulated TV signal into a first intermediate frequency signal having a frequency lower than that of the digitally modulated TV signal, the first intermediate frequency signal having a frequency in a standard TV band and useable in demodulating standard TV signals, a band-pass filter coupled to the first frequency converter, which selectively passes-through the first intermediate frequency signal, a phase-lock loop (PLL) circuit coupled to the first frequency converter, which controls an oscillation frequency of a local oscillator in the first frequency converter, a second frequency converter coupled to the band-pass filter, which converts the first intermediate frequency signal passed through the band-pass filter into a second intermediate frequency signal lower in frequency than said first intermediate frequency signal a digital demodulator coupled to the second frequency converter, which demodulates the second intermediate frequency signal as converted by the second frequency converter and a writer coupled to the digital demodulator, which records demodulated signal as demodulated by said digital demodulator in a recording medium.

    摘要翻译： 能够记录数字电视（TV）信号的数字广播记录器包括：第一频率转换器，其将接收到的数字调制的TV信号转换成具有低于数字调制的TV信号的频率的第一中频信号;第一中频信号 具有在标准TV频带中的频率并且可用于解调标准TV信号的频带滤波器，耦合到第一频率转换器的带通滤波器，其选择性地穿过第一中频信号;锁相环（PLL）电路耦合到 控制第一变频器中的本地振荡器的振荡频率的第一变频器，耦合到带通滤波器的第二频率转换器，其将通过带通滤波器的第一中频信号转换成第二中间信号 频率信号的频率低于所述第一中频信号a digital de 耦合到第二频率转换器的调制器，其解调由第二频率转换器转换的第二中频信号，以及耦合到数字解调器的写入器，其将由所述数字解调器解调的解调信号记录在记录介质中。

    Digital broadcasting receiver
    7.
    发明授权
    Digital broadcasting receiver 失效
    数字广播接收机

    公开(公告)号：US06657678B1

    公开(公告)日：2003-12-02

    申请号：US09320712

    申请日：1999-05-27

    申请人： Hiroyuki Mizukami ,  Yutaka Igarashi ,  Toshio Nagashima

    发明人： Hiroyuki Mizukami ,  Yutaka Igarashi ,  Toshio Nagashima

    IPC分类号： H04N546

    CPC分类号： H04N5/4446 ,  H04N5/4401 ,  H04N5/52 ,  H04N11/002

    摘要： A digital broadcast recorder capable of recording a digital television (TV) signals, includes a first frequency converter which converts a received digitally modulated TV signal into a first intermediate frequency signal having a frequency lower than that of the digitally modulated TV signal, the first intermediate frequency signal having a frequency in a standard TV band and useable in demodulating standard TV signals, a band-pass filter coupled to the first frequency converter, which selectively passes-through the first intermediate frequency signal, a phase-lock loop (PLL) circuit coupled to the first frequency converter, which controls an oscillation frequency of a local oscillator in the first frequency converter, a second frequency converter coupled to the band-pass filter, which converts the first intermediate frequency signal passed through the band-pass filter into a second intermediate frequency signal lower in frequency than said first intermediate frequency signal a digital demodulator coupled to the second frequency converter, which demodulates the second intermediate frequency signal as converted by the second frequency converter and a writer coupled to the digital demodulator, which records demodulated signal as demodulated by said digital demodulator in a recording medium.

    摘要翻译： 能够记录数字电视（TV）信号的数字广播记录器包括第一频率转换器，其将所接收的数字调制的TV信号转换成具有低于数字调制的TV信号的频率的第一中频信号，第一中间 频率信号具有在标准TV频带中的频率并且可用于解调标准TV信号;耦合到第一频率转换器的带通滤波器，其选择性地穿过第一中频信号;锁相环（PLL）电路 耦合到第一变频器，其控制第一变频器中的本地振荡器的振荡频率;耦合到带通滤波器的第二频率转换器，其将通过带通滤波器的第一中频信号转换成 第二中频信号的频率低于所述第一中频信号a数字 解调器，其耦合到第二频率转换器，其解调由第二频率转换器转换的第二中频信号，以及耦合到数字解调器的写入器，其将由所述数字解调器解调的解调信号记录在记录介质中。

    High definition TV signal receiver
    8.
    发明授权
    High definition TV signal receiver 失效
    高分辨率电视信号接收机

    公开(公告)号：US5572264A

    公开(公告)日：1996-11-05

    申请号：US386038

    申请日：1995-02-09

    申请人： Hiroyuki Mizukami ,  Yutaka Igarashi ,  Toshio Nagashima

    发明人： Hiroyuki Mizukami ,  Yutaka Igarashi ,  Toshio Nagashima

    IPC分类号： H04N5/44 ,  H04N5/52 ,  H04N5/922 ,  H04N11/00 ,  H04N5/46

    CPC分类号： H04N5/4446 ,  H04N5/4401 ,  H04N11/002 ,  H04N5/52

    摘要： To make it possible to receive a modulated signal which is obtained by suppressing a carrier signal such as a high definition TV signal which is digitally demodulated such as QAM (quadrature amplitude modulation), a receiver of the double super-heterodyne system having the first and second mixers 9 and 13 is a basic constitution. A band pass filter having a flatness in pass band and a small deviation of group delay which will prevent the demodulation of a high definition TV signal from degradation is used a first intermediate frequency filter 11. An SAW filter is used as a second intermediate frequency filter 16. The third mixer 28 for converting a second intermediate frequency signal to a third intermediate frequency signal in frequency is installed and the frequency of the third intermediate frequency signal to be converted is set to a value lower than the frequency of the second intermediate frequency signal. The demodulator 33 for a high definition TV signal is installed so as to demodulate a high definition TV signal included in the third intermediate frequency signal.

    摘要翻译： 为了可以接收通过抑制诸如QAM（正交幅度调制）等数字解调的高清晰度电视信号的载波信号获得的调制信号，具有第一和第二超外差系统的接收机 第二混合器9和13是基本构成。 使用具有通带平坦度的带通滤波器和防止高分辨率TV信号的解调降低的群延迟的小偏差，第一中频滤波器11.使用SAW滤波器作为第二中频滤波器 安装用于将第二中频信号转换为频率的第三中频信号的第三混频器28，将要转换的第三中频信号的频率设置为低于第二中频信号的频率 。 用于高清晰度电视信号的解调器33被安装成解调包括在第三中频信号中的高分辨率TV信号。

    Self-oscillation mixer circuits
    9.
    发明授权
    Self-oscillation mixer circuits 失效
    自振荡混频电路

    公开(公告)号：US4160953A

    公开(公告)日：1979-07-10

    申请号：US885978

    申请日：1978-03-13

    申请人： Shigeo Matsuura ,  Toshio Nagashima ,  Mitsuhisa Shinagawa

    发明人： Shigeo Matsuura ,  Toshio Nagashima ,  Mitsuhisa Shinagawa

    IPC分类号： H03B5/12 ,  H03D7/12 ,  H03D11/04 ,  H04B1/28

    CPC分类号： H03D11/04 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/124 ,  H03B5/1256 ,  H03D7/12

    摘要： A self-oscillation mixer circuit includes a cascade amplifier circuitry which is composed of a first transistor of a common emitter connection having a collector connected to an emitter of a second transistor of a common base connection, a filter circuitry for deriving an intermediate frequency signal and a resonance circuit adapted to resonate at a local oscillation frequency being connected to the collector of the second transistor and a feedback circuitry connected between the resonance circuitry and the emitter of the first transistor.

    摘要翻译： 自振荡混频器电路包括级联放大器电路，其由具有连接到公共基极连接的第二晶体管的发射极的集电极的公共发射极连接的第一晶体管，用于导出中频信号的滤波器电路和 谐振电路，其适于以连接到第二晶体管的集电极的本地振荡频率谐振，以及连接在谐振电路和第一晶体管的发射极之间的反馈电路。

    Magnetic brush developing device
    10.
    发明授权
    Magnetic brush developing device 失效
    磁刷显影装置

    公开(公告)号：US3985099A

    公开(公告)日：1976-10-12

    申请号：US576997

    申请日：1975-05-13

    申请人： Toshio Nagashima ,  Mitsuharu Nakaguchi ,  Takuzo Tsukamoto ,  Ryuzo Okada ,  Hidetoshi Kito ,  Kenichi Handa

    发明人： Toshio Nagashima ,  Mitsuharu Nakaguchi ,  Takuzo Tsukamoto ,  Ryuzo Okada ,  Hidetoshi Kito ,  Kenichi Handa

    IPC分类号： G03G15/09 ,  B05B5/02 ,  G03G13/09

    CPC分类号： G03G15/09

    摘要： In a magnetic brush developing device, the improvements comprising a plurality of developing rollers consisting of cylindrical stationary magnets each having a developing magnetic pole and disposed in facing relation to the surface of latent image forming member, and cylindrical sleeves rotating around each of said stationary magnets, said plurality of developing rollers being arranged along the surface of said latent image forming member in a manner that the developing magnetic poles have alternately opposite polarities, whereby delivery and receipt of the developing agent between the adjacent developing rollers are effected between the developing magnetic poles of adjacent developing rollers.

    摘要翻译： 在磁刷显影装置中，改进包括由圆柱形固定磁体组成的多个显影辊，每个显影辊具有显影磁极并以与潜像形成部件的表面相对的方式设置，以及围绕每个固定磁体旋转的圆筒形套筒 所述多个显影辊沿着所述潜像形成部件的表面以显影磁极具有交替相反的极性的方式布置，由此在显影磁极之间实现显影剂在相邻的显影辊之间的传送和接收 的相邻显影辊。